15 Jan
2016
15 Jan
'16
5:56 a.m.
On Thu, Jan 14, 2016 at 6:45 PM, Nicolin Chen nicoleotsuka@gmail.com wrote:
On Thu, Jan 14, 2016 at 01:26:24PM -0800, Caleb Crome wrote:
As for optimal settings, I finally came to a setting of 4 for depth & maxburst, which will result in more DMA requests, but it's the only way that works at 48kHz for me. The default settings is 13 (15 - 2) for the ones of the 15 item fifo, which is a pretty dramatic difference. I just don't know if other chips will behave badly in that case.
What's your final configuration for TFWM0 bits, 4?
Yes, a value of 4 for my use case: i.MX6 @ 768000 words/second (48khz * 16 channels).
Also, works at 8kHz, 16kHz 32 kHz.
A setting of 8 does not work reliably at 48kHz but does work at 8, 16 and 32.
-caleb